| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 64.95 | 136 |
| 2015 | 64.16 | 137 |
| 2014 | 63.45 | 136 |
| 2013 | 62.68 | 130 |
| 2012 | 61.9 | 129 |
| 2011 | 61.18 | 125 |
| 2010 | 60.57 | 123 |
| 2009 | 60.35 | 120 |
| 2008 | 60.29 | 119 |
| 2007 | 60.38 | 118 |
| 2006 | 60.6 | 114 |
| 2005 | 60.97 | 113 |
| 2004 | 61 | 108 |
| 2003 | 61.13 | 104 |
| 2002 | 61.31 | 102 |
| 2001 | 61.47 | 100 |
| 2000 | 61.55 | 95 |
| 1999 | 61.79 | 93 |
| 1998 | 62.02 | 91 |
| 1997 | 62.28 | 88 |
| 1996 | 62.68 | 86 |
| 1995 | 63.26 | 86 |
| 1994 | 63.82 | 82 |
| 1993 | 64.57 | 84 |
| 1992 | 65.44 | 84 |
| 1991 | 66.31 | 86 |
| 1990 | 67.1 | 85 |
| 1989 | 67.95 | 85 |
| 1988 | 68.76 | 82 |
| 1987 | 69.49 | 82 |
| 1986 | 70.17 | 82 |